1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * linux/fs/ext4/xattr_hurd.c 4 * Handler for extended gnu attributes for the Hurd. 5 * 6 * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> 7 * Copyright (C) 2020 by Jan (janneke) Nieuwenhuizen, <janneke@gnu.org> 8 */ 9 10 #include <linux/init.h> 11 #include <linux/string.h> 12 #include "ext4.h" 13 #include "xattr.h" 14 15 static bool 16 ext4_xattr_hurd_list(struct dentry *dentry) 17 { 18 return test_opt(dentry->d_sb, XATTR_USER); 19 } 20 21 static int 22 ext4_xattr_hurd_get(const struct xattr_handler *handler, 23 struct dentry *unused, struct inode *inode, 24 const char *name, void *buffer, size_t size) 25 { 26 if (!test_opt(inode->i_sb, XATTR_USER)) 27 return -EOPNOTSUPP; 28 29 return ext4_xattr_get(inode, EXT4_XATTR_INDEX_HURD, 30 name, buffer, size); 31 } 32 33 static int 34 ext4_xattr_hurd_set(const struct xattr_handler *handler, 35 struct user_namespace *mnt_userns, 36 struct dentry *unused, struct inode *inode, 37 const char *name, const void *value, 38 size_t size, int flags) 39 { 40 if (!test_opt(inode->i_sb, XATTR_USER)) 41 return -EOPNOTSUPP; 42 43 return ext4_xattr_set(inode, EXT4_XATTR_INDEX_HURD, 44 name, value, size, flags); 45 } 46 47 const struct xattr_handler ext4_xattr_hurd_handler = { 48 .prefix = XATTR_HURD_PREFIX, 49 .list = ext4_xattr_hurd_list, 50 .get = ext4_xattr_hurd_get, 51 .set = ext4_xattr_hurd_set, 52 }; 53